even, composite · 280th positive integer
The number 280
280 is an even composite number. It is the 280th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 5 × 7 |
| Divisors | 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280 |
| Binary | 100011000 |
| Hexadecimal | 0x118 |
| Roman numeral | CCLXXX |
| Digit sum | 10 |
| Properties | even, composite |
Reading 280 in NumGrid context
280 is one of the data points covered by this site’s integer properties and number-guessing puzzles dataset. The detail above comes directly from classical number theory plus NumGrid solver-derived puzzle statistics; the context that follows situates the headline numbers against the broader distribution across positive integers within the NumGrid target pool.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 280’s peers within positive integers within the NumGrid target pool. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Frequently asked
Is 280 a prime number?
No. 280 is composite. Its prime factorization is 2 × 2 × 2 × 5 × 7.
What are the factors of 280?
The factors (divisors) of 280 are 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280.
What is 280 in binary?
280 in binary is 100011000. In hexadecimal it's 118.
What is 280 as a Roman numeral?
280 in Roman numerals is CCLXXX.
What's the digit sum of 280?
Adding the digits of 280: 2 + 8 + 0 = 10.